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Whispering vs Speed of Sound: catalog facts
Whispering	Speed of Sound
Free The app is free; cloud transcription providers may charge for their API use.	Free Free and open source under the MIT licence; cloud LLM polishing uses your own provider.
Windows, macOS, Linux	Linux
Choice of local or cloud transcription models Built for quick dictation into text	Offline transcription with Whisper, Parakeet and Canary models Types into any app on X11 and Wayland
Cloud models need an API key from a provider Local models depend on your hardware for speed	Linux only Accuracy depends on the model you download and your hardware
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: MIT
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.